[INFO] fetching crate shawon 0.1.6...
[INFO] checking shawon-0.1.6 against master#8a703520e80d87d4423c01f9d4fbc9e5f6533a02 for pr-154205-1
[INFO] extracting crate shawon 0.1.6 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate shawon 0.1.6
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate shawon 0.1.6
[INFO] tweaked toml for crates.io crate shawon 0.1.6 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate shawon 0.1.6 on toolchain 8a703520e80d87d4423c01f9d4fbc9e5f6533a02
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate shawon 0.1.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cc v1.2.23
[INFO] [stderr]   Downloaded libc v0.2.172
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ae2db66bad3e083ae2f08dcd74f502d90d4ad2b5c8294207f4425ed59c16752
[INFO] running `Command { std: "docker" "start" "-a" "2ae2db66bad3e083ae2f08dcd74f502d90d4ad2b5c8294207f4425ed59c16752", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ae2db66bad3e083ae2f08dcd74f502d90d4ad2b5c8294207f4425ed59c16752", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ae2db66bad3e083ae2f08dcd74f502d90d4ad2b5c8294207f4425ed59c16752", kill_on_drop: false }`
[INFO] [stdout] 2ae2db66bad3e083ae2f08dcd74f502d90d4ad2b5c8294207f4425ed59c16752
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 315db26c1595469c05ea7752bf93280ea0b7576702486e778533af443c9c1fea
[INFO] running `Command { std: "docker" "start" "-a" "315db26c1595469c05ea7752bf93280ea0b7576702486e778533af443c9c1fea", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.2.23
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling shawon v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `shawon v0.1.6 (/opt/rustwide/workdir)`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_DEV_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/shawon-82c1315c3e8f6309/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (92) panicked at build.rs:16:7:
[INFO] [stderr]   called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x57738faf0c5a - std[adb0f7b69c6bb217]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                  at /rustc/8a703520e80d87d4423c01f9d4fbc9e5f6533a02/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x57738faf0c5a - std[adb0f7b69c6bb217]::backtrace_rs::backtrace::trace_unsynchronized::<std[adb0f7b69c6bb217]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                  at /rustc/8a703520e80d87d4423c01f9d4fbc9e5f6533a02/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x57738faf0c5a - std[adb0f7b69c6bb217]::sys::backtrace::_print_fmt
[INFO] [stderr]                                  at /rustc/8a703520e80d87d4423c01f9d4fbc9e5f6533a02/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]      3:     0x57738faf0c5a - <<std[adb0f7b69c6bb217]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[fd8a610aa93df4d]::fmt::Display>::fmt
[INFO] [stderr]                                  at /rustc/8a703520e80d87d4423c01f9d4fbc9e5f6533a02/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]      4:     0x57738fb04f4a - <core[fd8a610aa93df4d]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                  at /rustc/8a703520e80d87d4423c01f9d4fbc9e5f6533a02/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]      5:     0x57738fb04f4a - core[fd8a610aa93df4d]::fmt::write
[INFO] [stderr]      6:     0x57738faf69d2 - std[adb0f7b69c6bb217]::io::default_write_fmt::<std[adb0f7b69c6bb217]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                  at /rustc/8a703520e80d87d4423c01f9d4fbc9e5f6533a02/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x57738faf69d2 - <std[adb0f7b69c6bb217]::sys::stdio::unix::Stderr as std[adb0f7b69c6bb217]::io::Write>::write_fmt
[INFO] [stderr]                                  at /rustc/8a703520e80d87d4423c01f9d4fbc9e5f6533a02/library/std/src/io/mod.rs:1994:13
[INFO] [stderr]      8:     0x57738fad1a3f - <std[adb0f7b69c6bb217]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                  at /rustc/8a703520e80d87d4423c01f9d4fbc9e5f6533a02/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]      9:     0x57738fad1a3f - std[adb0f7b69c6bb217]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                  at /rustc/8a703520e80d87d4423c01f9d4fbc9e5f6533a02/library/std/src/panicking.rs:292:27
[INFO] [stderr]     10:     0x57738faeb0f1 - std[adb0f7b69c6bb217]::panicking::default_hook
[INFO] [stderr]                                  at /rustc/8a703520e80d87d4423c01f9d4fbc9e5f6533a02/library/std/src/panicking.rs:319:9
[INFO] [stderr]     11:     0x57738faeb2ab - std[adb0f7b69c6bb217]::panicking::panic_with_hook
[INFO] [stderr]                                  at /rustc/8a703520e80d87d4423c01f9d4fbc9e5f6533a02/library/std/src/panicking.rs:825:13
[INFO] [stderr]     12:     0x57738fad1af8 - std[adb0f7b69c6bb217]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                  at /rustc/8a703520e80d87d4423c01f9d4fbc9e5f6533a02/library/std/src/panicking.rs:698:13
[INFO] [stderr]     13:     0x57738fac93a9 - std[adb0f7b69c6bb217]::sys::backtrace::__rust_end_short_backtrace::<std[adb0f7b69c6bb217]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]                                  at /rustc/8a703520e80d87d4423c01f9d4fbc9e5f6533a02/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]     14:     0x57738fad252d - __rustc[19ba4bdc0ddbf569]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/8a703520e80d87d4423c01f9d4fbc9e5f6533a02/library/std/src/panicking.rs:689:5
[INFO] [stderr]     15:     0x57738fb056dc - core[fd8a610aa93df4d]::panicking::panic_fmt
[INFO] [stderr]                                  at /rustc/8a703520e80d87d4423c01f9d4fbc9e5f6533a02/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x57738fb05452 - core[fd8a610aa93df4d]::result::unwrap_failed
[INFO] [stderr]                                  at /rustc/8a703520e80d87d4423c01f9d4fbc9e5f6533a02/library/core/src/result.rs:1867:5
[INFO] [stderr]     17:     0x57738fa4e613 - build_script_build[5bab86fc5992e694]::main
[INFO] [stderr]     18:     0x57738fa4f913 - <fn() as core[fd8a610aa93df4d]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     19:     0x57738fa4e466 - std[adb0f7b69c6bb217]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     20:     0x57738fa4e479 - std[adb0f7b69c6bb217]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     21:     0x57738faea0f4 - <&dyn core[fd8a610aa93df4d]::ops::function::Fn<(), Output = i32> + core[fd8a610aa93df4d]::marker::Sync + core[fd8a610aa93df4d]::panic::unwind_safe::RefUnwindSafe as core[fd8a610aa93df4d]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                  at /rustc/8a703520e80d87d4423c01f9d4fbc9e5f6533a02/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     22:     0x57738faea0f4 - std[adb0f7b69c6bb217]::panicking::catch_unwind::do_call::<&dyn core[fd8a610aa93df4d]::ops::function::Fn<(), Output = i32> + core[fd8a610aa93df4d]::marker::Sync + core[fd8a610aa93df4d]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/8a703520e80d87d4423c01f9d4fbc9e5f6533a02/library/std/src/panicking.rs:581:40
[INFO] [stderr]     23:     0x57738faea0f4 - std[adb0f7b69c6bb217]::panicking::catch_unwind::<i32, &dyn core[fd8a610aa93df4d]::ops::function::Fn<(), Output = i32> + core[fd8a610aa93df4d]::marker::Sync + core[fd8a610aa93df4d]::panic::unwind_safe::RefUnwindSafe>
[INFO] [stderr]                                  at /rustc/8a703520e80d87d4423c01f9d4fbc9e5f6533a02/library/std/src/panicking.rs:544:19
[INFO] [stderr]     24:     0x57738faea0f4 - std[adb0f7b69c6bb217]::panic::catch_unwind::<&dyn core[fd8a610aa93df4d]::ops::function::Fn<(), Output = i32> + core[fd8a610aa93df4d]::marker::Sync + core[fd8a610aa93df4d]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/8a703520e80d87d4423c01f9d4fbc9e5f6533a02/library/std/src/panic.rs:359:14
[INFO] [stderr]     25:     0x57738faea0f4 - std[adb0f7b69c6bb217]::rt::lang_start_internal::{closure#0}
[INFO] [stderr]                                  at /rustc/8a703520e80d87d4423c01f9d4fbc9e5f6533a02/library/std/src/rt.rs:175:24
[INFO] [stderr]     26:     0x57738faea0f4 - std[adb0f7b69c6bb217]::panicking::catch_unwind::do_call::<std[adb0f7b69c6bb217]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/8a703520e80d87d4423c01f9d4fbc9e5f6533a02/library/std/src/panicking.rs:581:40
[INFO] [stderr]     27:     0x57738faea0f4 - std[adb0f7b69c6bb217]::panicking::catch_unwind::<isize, std[adb0f7b69c6bb217]::rt::lang_start_internal::{closure#0}>
[INFO] [stderr]                                  at /rustc/8a703520e80d87d4423c01f9d4fbc9e5f6533a02/library/std/src/panicking.rs:544:19
[INFO] [stderr]     28:     0x57738faea0f4 - std[adb0f7b69c6bb217]::panic::catch_unwind::<std[adb0f7b69c6bb217]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/8a703520e80d87d4423c01f9d4fbc9e5f6533a02/library/std/src/panic.rs:359:14
[INFO] [stderr]     29:     0x57738faea0f4 - std[adb0f7b69c6bb217]::rt::lang_start_internal
[INFO] [stderr]                                  at /rustc/8a703520e80d87d4423c01f9d4fbc9e5f6533a02/library/std/src/rt.rs:171:5
[INFO] [stderr]     30:     0x57738fa4e451 - std[adb0f7b69c6bb217]::rt::lang_start::<()>
[INFO] [stderr]     31:     0x57738fa4f975 - main
[INFO] [stderr]     32:     0x738db8cd81ca - <unknown>
[INFO] [stderr]     33:     0x738db8cd828b - __libc_start_main
[INFO] [stderr]     34:     0x57738fa4def5 - _start
[INFO] [stderr]     35:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "315db26c1595469c05ea7752bf93280ea0b7576702486e778533af443c9c1fea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "315db26c1595469c05ea7752bf93280ea0b7576702486e778533af443c9c1fea", kill_on_drop: false }`
[INFO] [stdout] 315db26c1595469c05ea7752bf93280ea0b7576702486e778533af443c9c1fea